초록 ▼

An as prepared Na-ETS-10 zeolite was modified by ion exchange with a mono-, di-, or tri-valent cation and mixtures thereof. Several of the modified ETS-10 zeolites showed improved pressure swing capacity during the selective adsorption of ethylene from an ethylene/ethane mixture, relative to Na-ETS-

An as prepared Na-ETS-10 zeolite was modified by ion exchange with a mono-, di-, or tri-valent cation and mixtures thereof. Several of the modified ETS-10 zeolites showed improved pressure swing capacity during the selective adsorption of ethylene from an ethylene/ethane mixture, relative to Na-ETS-10, although the selectivity of adsorption decreased. Modification with Ba2+ and Ba2+/H+ provided modified ETS-10 zeolite adsorbents having a good balance of selectivity and pressure swing capacity for the separation of ethylene/ethane mixtures, making them useful adsorbents for PSA processes.

대표청구항 ▼

What is claimed is: 1. A method of increasing the proportion of olefin in a gaseous mixture comprising said olefin and a paraffin having the same number of carbon atoms as said olefin, wherein said process comprises:passing said mixture over a modified ETS-10 zeolite at a temperature and pressure wh

What is claimed is: 1. A method of increasing the proportion of olefin in a gaseous mixture comprising said olefin and a paraffin having the same number of carbon atoms as said olefin, wherein said process comprises:passing said mixture over a modified ETS-10 zeolite at a temperature and pressure wherein said modified ETS-10 material selectively adsorbs said olefin from said mixture, andlowering the pressure and optionally increasing the temperature to release the selectively adsorbed olefin from said modified ETS-10 zeolite.